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BugZero found this defect 4715 days ago.
A task fails for a vSphere Virtual Machine that is being processed by Veeam Backup & Replication with the error: Error: The operation is not allowed in the current state.
The error message "The operation is not allowed in the current state." is being reported to Veeam Backup & Replication by the vSphere Environment when Veeam Backup & Replication sends the request that a snapshot be created.
As this issue has to do with the inability to create a snapshot on the virtual machine within the vSphere Environment, the resolution will be to determine what is preventing a snapshot from being created. Once a snapshot can be manually created on the VM (remember to remove it). The Veeam Backup & Replication job will work without issue. Observed possible causes: VM is stuck in shutting down state. VM is in the middle of being Storage vMotioned Related VMware KB article: https://kb.vmware.com/s/article/1027707
If this error is occurring with a new replication job, please review: https://www.veeam.com/kb3000